SL1122A250

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Gas Discharge Tube Arresters (GDT) is one of the most important protective devices for power systems. It is a special kind of lightning arrester utilized to protect electrical equipment from damage that could result from transient over-voltages and current surges due to lightning. The SL1122A250 is a type of GDT that is specially designed to protect against high surge voltages by quickly restricting the excessive current and limiting the system voltage rise. It is a low-cost, reliable, and temperature-stable solution for medium-voltage applications.

The working principle of a SL1122A250 GDT is based on a concept known as the “avalanche effect”. It works by allowing a very small amount of current through its electrodes when exposed to a voltage that is higher than a certain threshold level. This current flow generates an electric field, which in turn strengthens the electric field of the arrester, thus initiating an avalanche breakdown of the gas inside. This breakdown causes a very large decrease in the voltage across the two electrodes. As the current continues to flow, the strength of the electric field decreases, allowing the voltage to rise again until it reaches the threshold level. This process is repeated until the over-voltage is no longer present.

The SL1122A250 GDT is mostly deployed for medium-voltage applications, such as in distribution systems or for equipment protection in industrial and commercial areas. It can also be used in high-voltage applications when combined with compatible surge arresters. It is tested for a wide range of voltages, and is suitable for operation in temperatures up to 85°C. The SL1122A250 has a rated voltage of 5-to-13.8-kV, and is UL 1066 and IEC 61643-1 certified.

The SL1122A250 is known for its robustness and reliability in the field, as well as its cost-effectiveness. It is a specially designed device that is able to withstand extremely high currents and voltages, and this makes it an excellent option for protection of electric equipment. It also has a low operating temperature and consumes very little energy. This makes it an ideal choice for applications where energy efficiency and cost are of vital importance.

In summary, the SL1122A250 GDT is an excellent protective device for medium-voltage applications. It is cost-effective, reliable, and temperature-stable, and is able to quickly and efficiently protect electrical equipment from lightning and other transient over-voltages and current surges. Its robust design and low energy consumption makes it highly desirable in many different areas, and it is widely deployed in industrial and commercial applications.

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